4f4c4942-4343-5764-6473-313235323136 English Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en 2026-04-14T09:43:41.677Z NRW 1.0 wel NONE Large Raised Reservoir (Registered information) Large Raised Reservoir (Registered information) Cronfa Ddŵr Ddyrchafedig Fawr (Gwybodaeth gofrestredig) 2026-04-09 NRW_DS125216 This dataset contains details of Large Raised Reservoirs. Natural Resources Wales (NRW) collects and maintains data on reservoirs designed or capable of holding more than 10,000 cubic metres of water above the natural level of any part of the land adjoining them defined as 'large raised reservoirs' under the Reservoirs Act 1975. Two types of reservoir are maintained within the register: - Impounding; or - Non-Impounding. This dataset is an extract from NRW’s Cronfeydd/Reservoir Database. It contains registered information about the physical characteristics and inspection regimes of the dam. This dataset contains details of Large Raised Reservoirs. Natural Resources Wales (NRW) collects and maintains data on reservoirs designed or capable of holding more than 10,000 cubic metres of water above the natural level of any part of the land adjoining them defined as 'large raised reservoirs' under the Reservoirs Act 1975. Two types of reservoir are maintained within the register: - Impounding; or - Non-Impounding. This dataset is an extract from NRW’s Cronfeydd/Reservoir Database. It contains registered information about the physical characteristics and inspection regimes of the dam. Mae'r set ddata hon yn cynnwys manylion cronfeydd dŵr uwch mawr. Mae Cyfoeth Naturiol Cymru (CNC) yn casglu a chynnal data ar bob cronfa ddŵr ddynodedig neu bob cronfa ddŵr sy'n gallu dal dros 10,000 metr ciwbig o ddŵr uwchben lefel naturiol unrhyw ran o'r tir sy'n ffinio arni, sy'n cael ei diffinio fel 'cronfa ddŵr uwch mawr' dan Ddeddf Cronfeydd Dŵr 1975. Mae dau fath o gronfeydd dŵr yn cael eu cynnal o fewn y gofrestr: - Cronfa sy'n cronni (argaeedig); neu - Cronfa nad yw'n cronni (pwmpio/dirwystr). Rhan o Gronfa Ddata Cronfeydd/Reservoir CNC yw’r set ddata hon. Mae'n cynnwys gwybodaeth gofrestredig am nodweddion corfforol a chyfundrefnau arolygu'r argae. Caiff y data hwn ei gasglu fel rhan o Gofrestr Gyhoeddus Deddf Cronfeydd Dŵr. Datganiad priodoli: Yn cynnwys gwybodaeth Cyfoeth Naturiol Cymru © Cyfoeth Naturiol Cymru a hawl cronfa ddata. Cedwir pob hawl. Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Natural Resources Wales (NRW) Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales enquiries@naturalresourceswales.gov.uk http://naturalresources.wales/?lang=en Environmental monitoring facilities GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme flood risk management Reservoirs Act 1975 NRW Thesaurus 2026-03-04 geonetwork.thesaurus.local.theme.converted_nrw-keywords SeaDataNet Parameter Discovery Vocabulary 2024-06-19 geonetwork.thesaurus.external.theme.rdf+xml Reservoirs IPSV Subjects List 2020-11-18 geonetwork.thesaurus.external.theme.subjects Sustainable Management of Natural Resources (SMNR) Hydrological Processes (SMNR) Natural Resources (Incl. Features and Processes) (SMNR) Water Quality (SMNR) Ecosystem (SMNR) Water Resources (SMNR) Freshwater and Wetlands (SMNR) Flooding (SMNR) NRW SMNR Keywords 2024-06-26 geonetwork.thesaurus.local.theme.converted_nrw-smnr-keywords There are no access restrictions on this data. NRW may release, publish or disseminate it freely noLimitations © CNC/NRW. Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose. Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Open Government Licence English inlandWaters SeaVoX Vertical Co-ordinate Coverages 2021-01-06 Wales (WLS) -5.777741 -2.608865 51.240829 53.513067 1900-01-01 Geographic Information System ESRI Feature Class https://datamap.gov.wales/capabilities/layer/3514/?ows_service=wms OGC:WMS Web Mapping Services https://datamap.gov.wales/layers/geonode:nrw_large_raised_reservoirs_registered_information WWW:LINK-1.0-http--link Download Data Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 This dataset has not been assessed for conformance to the referenced INSPIRE regulation. false This data is collected as part of the Reservoirs Act Public Register This data is collected as part of the Reservoirs Act Public Register